[amp_mcq option1=”Computer control system” option2=”Digital data system” option3=”Stochastic control system” option4=”Adaptive control system” correct=”option3″]
Detailed SolutionA control system working under unknown random actions is called
Electrical control systems
22. The phase lag produced by transportation relays
[amp_mcq option1=”Is independent of frequency” option2=”Is inversely proportional to frequency” option3=”Increases linearly with frequency” option4=”Decreases linearly with frequency” correct=”option3″]
Detailed SolutionThe phase lag produced by transportation relays
23. The output of a feedback control system must be a function of
[amp_mcq option1=”reference and output” option2=”reference and input” option3=”input and feedback signal” option4=”output and feedback signal” correct=”option4″]
Detailed SolutionThe output of a feedback control system must be a function of
24. Which of the following devices are commonly used as error detectors in instruments ?
[amp_mcq option1=”Vernistats” option2=”Microsyns” option3=”Resolvers” option4=”Any of the above” correct=”option4″]
25. A control system with excessive noise, is likely to suffer from
[amp_mcq option1=”saturation in amplifying stages” option2=”loss of gain” option3=”vibrations” option4=”oscillations” correct=”option4″]
Detailed SolutionA control system with excessive noise, is likely to suffer from
26. In open loop system
[amp_mcq option1=”the control action depends on the size of the system” option2=”the control action depends on system variables” option3=”the control action depends on the input signal” option4=”the control action is independent of the output” correct=”option4″]
27. An automatic toaster is a ______ loop control system.
[amp_mcq option1=”open” option2=”closed” option3=”partially closed” option4=”any of the above” correct=”option2″]
Detailed SolutionAn automatic toaster is a ______ loop control system.
28. In liquid level and electrical system analogy, voltage is considered analogous to
[amp_mcq option1=”head” option2=”liquid flow” option3=”liquid flow rate” option4=”none of the above” correct=”option3″]
Detailed SolutionIn liquid level and electrical system analogy, voltage is considered analogous to
29. Is not a final control element.
[amp_mcq option1=”Control valve” option2=”Potentiometer” option3=”Electropneumatic converter” option4=”Servomotor” correct=”option3″]
30. If the gain of the critical damped system is increased it will behave as
[amp_mcq option1=”oscillatory” option2=”critically damped” option3=”overdamped” option4=”underdamped E. none of the above” correct=”option1″]
Detailed SolutionIf the gain of the critical damped system is increased it will behave as